Public health workshops have been used to promote handwashing practices in schools as a means of disease prevention. Qualitative data were collected through semi-structured interviews with students, teachers, and school administrators to assess changes in knowledge, attitudes, and practices related to handwashing. Findings indicate that participation in the workshops led to a significant increase (p < .05) in the proportion of participants who reported always washing their hands after using the toilet from 30% to 70%. The qualitative data suggest that public health workshops can be effective tools for improving handwashing practices, although sustained intervention is necessary for long-term impact. Schools and public health agencies should continue providing regular training sessions on proper hygiene techniques and reinforce these through ongoing support mechanisms. Treatment effect was estimated with $\text{logit}(p_i)=\beta_0+\beta^\top X_i$, and uncertainty reported using confidence-interval based inference.